Comment by justinclift

Doing some looking around online, I think it was Mutant 59:

https://www.amazon.co.uk/gp/product/0670496626

There's not much info about it on the Amazon page nor Goodreads, but there's a good review of it here:

https://astrofella.wordpress.com/2018/07/27/mutant-59-the-pl...